src/main/radmin.c

   1 /*
   2  * radmin.c     RADIUS Administration tool.
   3  *
   4  * Version:     $Id$
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * Copyright 2008   The FreeRADIUS server project
  21  * Copyright 2008   Alan DeKok <aland@deployingradius.com>
  22  */
  23
  24 #include <freeradius-devel/ident.h>
  25 RCSID("$Id$")
  26
  27 #include <freeradius-devel/radiusd.h>
  28 #include <freeradius-devel/radpaths.h>
  29
  30 #ifdef HAVE_SYS_SOCKET_H
  31 #include <sys/socket.h>
  32 #endif
  33
  34 #ifdef HAVE_SYS_UN_H
  35 #include <sys/un.h>
  36 #ifndef SUN_LEN
  37 #define SUN_LEN(su)  (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
  38 #endif
  39 #endif
  40
  41 #ifdef HAVE_GETOPT_H
  42 #include <getopt.h>
  43 #endif
  44
  45 #ifdef HAVE_SYS_STAT_H
  46 #include <sys/stat.h>
  47 #endif
  48
  49 #ifdef HAVE_LIBREADLINE
  50
  51 #if defined(HAVE_READLINE_READLINE_H)
  52 #include <readline/readline.h>
  53 #define USE_READLINE (1)
  54 #elif defined(HAVE_READLINE_H)
  55 #include <readline.h>
  56 #define USE_READLINE (1)
  57 #endif /* !defined(HAVE_READLINE_H) */
  58
  59 #endif /* HAVE_LIBREADLINE */
  60
  61 #ifdef HAVE_READLINE_HISTORY
  62 #if defined(HAVE_READLINE_HISTORY_H)
  63 #include <readline/history.h>
  64 #define USE_READLINE_HISTORY (1)
  65 #elif defined(HAVE_HISTORY_H)
  66 #include <history.h>
  67 #define USE_READLINE_HISTORY (1)
  68 #endif /* defined(HAVE_READLINE_HISTORY_H) */
  69
  70 #endif /* HAVE_READLINE_HISTORY */
  71
  72 /*
  73  *      For configuration file stuff.
  74  */
  75 char *radius_dir = RADDBDIR;
  76 const char *progname = "radmin";
  77
  78 /*
  79  *      The rest of this is because the conffile.c, etc. assume
  80  *      they're running inside of the server.  And we don't (yet)
  81  *      have a "libfreeradius-server", or "libfreeradius-util".
  82  */
  83 int debug_flag = 0;
  84 struct main_config_t mainconfig;
  85 char *request_log_file = NULL;
  86 char *debug_log_file = NULL;
  87 int radius_xlat(UNUSED char *out, UNUSED int outlen, UNUSED const char *fmt,
  88                 UNUSED REQUEST *request, UNUSED RADIUS_ESCAPE_STRING func)
  89 {
  90         return -1;
  91 }
  92
  93 static FILE *outputfp = NULL;
  94 static int echo = FALSE;
  95
  96 static int fr_domain_socket(const char *path)
  97 {
  98         int sockfd = -1;
  99 #ifdef HAVE_SYS_UN_H
 100         size_t len;
 101         socklen_t socklen;
 102         struct sockaddr_un saremote;
 103
 104         len = strlen(path);
 105         if (len >= sizeof(saremote.sun_path)) {
 106                 fprintf(stderr, "%s: Path too long in filename\n", progname);
 107                 return -1;
 108         }
 109
 110         if ((sockfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
 111                 fprintf(stderr, "%s: Failed creating socket: %s\n",
 112                         progname, strerror(errno));
 113                 return -1;
 114         }
 115
 116         saremote.sun_family = AF_UNIX;
 117         memcpy(saremote.sun_path, path, len + 1); /* SUN_LEN does strlen */
 118
 119         socklen = SUN_LEN(&saremote);
 120
 121         if (connect(sockfd, (struct sockaddr *)&saremote, socklen) < 0) {
 122                 struct stat buf;
 123
 124                 close(sockfd);
 125                 fprintf(stderr, "%s: Failed connecting to %s: %s\n",
 126                         progname, path, strerror(errno));
 127
 128                 /*
 129                  *      The file doesn't exist.  Tell the user how to
 130                  *      fix it.
 131                  */
 132                 if ((stat(path, &buf) < 0) &&
 133                     (errno == ENOENT)) {
 134                         fprintf(stderr, "  Perhaps you need to run the commands:\n\tcd /etc/raddb\n\tln -s sites-available/control-socket sites-enabled/control-socket\n  and then re-start the server?\n");
 135                 }
 136
 137                 return -1;
 138         }
 139
 140 #ifdef O_NONBLOCK
 141         {
 142                 int flags;
 143
 144                 if ((flags = fcntl(sockfd, F_GETFL, NULL)) < 0)  {
 145                         fprintf(stderr, "%s: Failure getting socket flags: %s",
 146                                 progname, strerror(errno));
 147                         close(sockfd);
 148                         return -1;
 149                 }
 150
 151                 flags |= O_NONBLOCK;
 152                 if( fcntl(sockfd, F_SETFL, flags) < 0) {
 153                         fprintf(stderr, "%s: Failure setting socket flags: %s",
 154                                 progname, strerror(errno));
 155                         close(sockfd);
 156                         return -1;
 157                 }
 158         }
 159 #endif
 160 #endif
 161         return sockfd;
 162 }
 163
 164 static int usage(void)
 165 {
 166         printf("Usage: %s [ args ]\n", progname);
 167         printf("  -d raddb_dir    Configuration files are in \"raddbdir/*\".\n");
 168         printf("  -e command      Execute 'command' and then exit.\n");
 169         printf("  -E              Echo commands as they are being executed.\n");
 170         printf("  -f socket_file  Open socket_file directly, without reading radius.conf\n");
 171         printf("  -i input_file   Read commands from 'input_file'.\n");
 172         printf("  -n name         Read raddb/name.conf instead of raddb/radiusd.conf\n");
 173         printf("  -o output_file  Write commands to 'output_file'.\n");
 174         printf("  -q              Quiet mode.\n");
 175
 176         exit(1);
 177 }
 178
 179 static ssize_t run_command(int sockfd, const char *command,
 180                            char *buffer, size_t bufsize)
 181 {
 182         char *p;
 183         ssize_t size, len;
 184
 185         if (echo) {
 186                 fprintf(outputfp, "%s\n", command);
 187         }
 188
 189         /*
 190          *      Write the text to the socket.
 191          */
 192         if (write(sockfd, command, strlen(command)) < 0) return -1;
 193         if (write(sockfd, "\r\n", 2) < 0) return -1;
 194
 195         /*
 196          *      Read the response
 197          */
 198         size = 0;
 199         buffer[0] = '\0';
 200
 201         memset(buffer, 0, bufsize);
 202
 203         while (1) {
 204                 int rcode;
 205                 fd_set readfds;
 206
 207                 FD_ZERO(&readfds);
 208                 FD_SET(sockfd, &readfds);
 209
 210                 rcode = select(sockfd + 1, &readfds, NULL, NULL, NULL);
 211                 if (rcode < 0) {
 212                         if (errno == EINTR) continue;
 213
 214                         fprintf(stderr, "%s: Failed selecting: %s\n",
 215                                 progname, strerror(errno));
 216                         exit(1);
 217                 }
 218
 219 #ifdef MSG_DONTWAIT
 220                 len = recv(sockfd, buffer + size,
 221                            bufsize - size - 1, MSG_DONTWAIT);
 222 #else
 223                 /*
 224                  *      Read one byte at a time (ugh)
 225                  */
 226                 len = recv(sockfd, buffer + size, 1, 0);
 227 #endif
 228                 if (len < 0) {
 229                         /*
 230                          *      No data: keep looping
 231                          */
 232                         if ((errno == EAGAIN) || (errno == EINTR)) {
 233                                 continue;
 234                         }
 235
 236                         fprintf(stderr, "%s: Error reading socket: %s\n",
 237                                 progname, strerror(errno));
 238                         exit(1);
 239                 }
 240                 if (len == 0) return 0; /* clean exit */
 241
 242                 size += len;
 243                 buffer[size] = '\0';
 244
 245                 /*
 246                  *      There really is a better way of doing this.
 247                  */
 248                 p = strstr(buffer, "radmin> ");
 249                 if (p &&
 250                     ((p == buffer) ||
 251                      (p[-1] == '\n') ||
 252                      (p[-1] == '\r'))) {
 253                         *p = '\0';
 254
 255                         if (p[-1] == '\n') p[-1] = '\0';
 256                         break;
 257                 }
 258         }
 259
 260         /*
 261          *      Blank prompt.  Go get another command.
 262          */
 263         if (!buffer[0]) return 1;
 264
 265         buffer[size] = '\0'; /* this is at least right */
 266
 267         return 2;
 268 }
 269
 270 #define MAX_COMMANDS (4)
 271
 272 int main(int argc, char **argv)
 273 {
 274         int argval, quiet = 0;
 275         int done_license = 0;
 276         int sockfd;
 277         uint32_t magic;
 278         char *line = NULL;
 279         ssize_t len, size;
 280         const char *file = NULL;
 281         const char *name = "radiusd";
 282         char *p, buffer[65536];
 283         const char *input_file = NULL;
 284         FILE *inputfp = stdin;
 285         const char *output_file = NULL;
 286
 287         char *commands[MAX_COMMANDS];
 288         int num_commands = -1;
 289
 290         outputfp = stdout;      /* stdout is not a constant value... */
 291
 292         if ((progname = strrchr(argv[0], FR_DIR_SEP)) == NULL)
 293                 progname = argv[0];
 294         else
 295                 progname++;
 296
 297         while ((argval = getopt(argc, argv, "d:hi:e:Ef:n:o:q")) != EOF) {
 298                 switch(argval) {
 299                 case 'd':
 300                         if (file) {
 301                                 fprintf(stderr, "%s: -d and -f cannot be used together.\n", progname);
 302                                 exit(1);
 303                         }
 304                         radius_dir = optarg;
 305                         break;
 306
 307                 case 'e':
 308                         num_commands++; /* starts at -1 */
 309                         if (num_commands >= MAX_COMMANDS) {
 310                                 fprintf(stderr, "%s: Too many '-e'\n",
 311                                         progname);
 312                                 exit(1);
 313                         }
 314                         commands[num_commands] = optarg;
 315                         break;
 316
 317                 case 'E':
 318                         echo = TRUE;
 319                         break;
 320
 321                 case 'f':
 322                         radius_dir = NULL;
 323                         file = optarg;
 324                         break;
 325
 326                 default:
 327                 case 'h':
 328                         usage();
 329                         break;
 330
 331                 case 'i':
 332                         if (strcmp(optarg, "-") != 0) {
 333                                 input_file = optarg;
 334                         }
 335                         quiet = 1;
 336                         break;
 337
 338                 case 'n':
 339                         name = optarg;
 340                         break;
 341
 342                 case 'o':
 343                         if (strcmp(optarg, "-") != 0) {
 344                                 output_file = optarg;
 345                         }
 346                         quiet = 1;
 347                         break;
 348
 349                 case 'q':
 350                         quiet = 1;
 351                         break;
 352                 }
 353         }
 354
 355         if (radius_dir) {
 356                 int rcode;
 357                 CONF_SECTION *cs, *subcs;
 358
 359                 file = NULL;    /* MUST read it from the conffile now */
 360
 361                 snprintf(buffer, sizeof(buffer), "%s/%s.conf",
 362                          radius_dir, name);
 363
 364                 cs = cf_file_read(buffer);
 365                 if (!cs) {
 366                         fprintf(stderr, "%s: Errors reading %s\n",
 367                                 progname, buffer);
 368                         exit(1);
 369                 }
 370
 371                 subcs = NULL;
 372                 while ((subcs = cf_subsection_find_next(cs, subcs, "listen")) != NULL) {
 373                         const char *value;
 374                         CONF_PAIR *cp = cf_pair_find(subcs, "type");
 375
 376                         if (!cp) continue;
 377
 378                         value = cf_pair_value(cp);
 379                         if (!value) continue;
 380
 381                         if (strcmp(value, "control") != 0) continue;
 382
 383                         /*
 384                          *      Now find the socket name (sigh)
 385                          */
 386                         rcode = cf_item_parse(subcs, "socket",
 387                                               PW_TYPE_STRING_PTR,
 388                                               &file, NULL);
 389                         if (rcode < 0) {
 390                                 fprintf(stderr, "%s: Failed parsing listen section\n", progname);
 391                                 exit(1);
 392                         }
 393
 394                         if (!file) {
 395                                 fprintf(stderr, "%s: No path given for socket\n",
 396                                         progname);
 397                                 exit(1);
 398                         }
 399                         break;
 400                 }
 401
 402                 if (!file) {
 403                         fprintf(stderr, "%s: Could not find control socket in %s\n",
 404                                 progname, buffer);
 405                         exit(1);
 406                 }
 407         }
 408
 409         if (input_file) {
 410                 inputfp = fopen(input_file, "r");
 411                 if (!inputfp) {
 412                         fprintf(stderr, "%s: Failed opening %s: %s\n",
 413                                 progname, input_file, strerror(errno));
 414                         exit(1);
 415                 }
 416         }
 417
 418         if (output_file) {
 419                 outputfp = fopen(output_file, "w");
 420                 if (!outputfp) {
 421                         fprintf(stderr, "%s: Failed creating %s: %s\n",
 422                                 progname, output_file, strerror(errno));
 423                         exit(1);
 424                 }
 425         }
 426
 427         /*
 428          *      Check if stdin is a TTY only if input is from stdin
 429          */
 430         if (input_file && !quiet && !isatty(STDIN_FILENO)) quiet = 1;
 431
 432 #ifdef USE_READLINE
 433         if (!quiet) {
 434 #ifdef USE_READLINE_HISTORY
 435                 using_history();
 436 #endif
 437                 rl_bind_key('\t', rl_insert);
 438         }
 439 #endif
 440
 441  reconnect:
 442         /*
 443          *      FIXME: Get destination from command line, if possible?
 444          */
 445         sockfd = fr_domain_socket(file);
 446         if (sockfd < 0) {
 447                 exit(1);
 448         }
 449
 450         /*
 451          *      Read initial magic && version information.
 452          */
 453         for (size = 0; size < 8; size += len) {
 454                 len = read(sockfd, buffer + size, 8 - size);
 455                 if (len < 0) {
 456                         fprintf(stderr, "%s: Error reading initial data from socket: %s\n",
 457                                 progname, strerror(errno));
 458                         exit(1);
 459                 }
 460         }
 461
 462         memcpy(&magic, buffer, 4);
 463         magic = ntohl(magic);
 464         if (magic != 0xf7eead15) {
 465                 fprintf(stderr, "%s: Socket %s is not FreeRADIUS administration socket\n", progname, file);
 466                 exit(1);
 467         }
 468
 469         memcpy(&magic, buffer + 4, 4);
 470         magic = ntohl(magic);
 471         if (magic != 1) {
 472                 fprintf(stderr, "%s: Socket version mismatch: Need 1, got %d\n",
 473                         progname, magic);
 474                 exit(1);
 475         }
 476
 477         /*
 478          *      Run one command.
 479          */
 480         if (num_commands >= 0) {
 481                 int i;
 482
 483                 for (i = 0; i <= num_commands; i++) {
 484                         size = run_command(sockfd, commands[i],
 485                                            buffer, sizeof(buffer));
 486                         if (size < 0) exit(1);
 487
 488                         if (buffer[0]) {
 489                                 fputs(buffer, outputfp);
 490                                 fprintf(outputfp, "\n");
 491                                 fflush(outputfp);
 492                         }
 493                 }
 494                 exit(0);
 495         }
 496
 497         if (!done_license && !quiet) {
 498                 printf("radmin " RADIUSD_VERSION " - FreeRADIUS Server administration tool.\n");
 499                 printf("Copyright (C) 2008 The FreeRADIUS server project and contributors.\n");
 500                 printf("There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n");
 501                 printf("PARTICULAR PURPOSE.\n");
 502                 printf("You may redistribute copies of FreeRADIUS under the terms of the\n");
 503                 printf("GNU General Public License v2.\n");
 504
 505                 done_license = 1;
 506         }
 507
 508         /*
 509          *      FIXME: Do login?
 510          */
 511
 512         while (1) {
 513 #ifndef USE_READLINE
 514                 if (!quiet) {
 515                         printf("radmin> ");
 516                         fflush(stdout);
 517                 }
 518 #else
 519                 if (!quiet) {
 520                         line = readline("radmin> ");
 521
 522                         if (!line) break;
 523
 524                         if (!*line) {
 525                                 free(line);
 526                                 continue;
 527                         }
 528
 529 #ifdef USE_READLINE_HISTORY
 530                         add_history(line);
 531 #endif
 532                 } else          /* quiet, or no readline */
 533 #endif
 534                 {
 535                         line = fgets(buffer, sizeof(buffer), inputfp);
 536                         if (!line) break;
 537
 538                         p = strchr(buffer, '\n');
 539                         if (!p) {
 540                                 fprintf(stderr, "%s: Input line too long\n",
 541                                         progname);
 542                                 exit(1);
 543                         }
 544
 545                         *p = '\0';
 546
 547                         /*
 548                          *      Strip off leading spaces.
 549                          */
 550                         for (p = line; *p != '\0'; p++) {
 551                                 if ((p[0] == ' ') ||
 552                                     (p[0] == '\t')) {
 553                                         line = p + 1;
 554                                         continue;
 555                                 }
 556
 557                                 if (p[0] == '#') {
 558                                         line = NULL;
 559                                         break;
 560                                 }
 561
 562                                 break;
 563                         }
 564
 565                         /*
 566                          *      Comments: keep going.
 567                          */
 568                         if (!line) continue;
 569
 570                         /*
 571                          *      Strip off CR / LF
 572                          */
 573                         for (p = line; *p != '\0'; p++) {
 574                                 if ((p[0] == '\r') ||
 575                                     (p[0] == '\n')) {
 576                                         p[0] = '\0';
 577                                         break;
 578                                 }
 579                         }
 580                 }
 581
 582                 if (strcmp(line, "reconnect") == 0) {
 583                         close(sockfd);
 584                         line = NULL;
 585                         goto reconnect;
 586                 }
 587
 588                 /*
 589                  *      Exit, done, etc.
 590                  */
 591                 if ((strcmp(line, "exit") == 0) ||
 592                     (strcmp(line, "quit") == 0)) {
 593                         break;
 594                 }
 595
 596                 size = run_command(sockfd, line, buffer, sizeof(buffer));
 597                 if (size <= 0) break; /* error, or clean exit */
 598
 599                 if (size == 1) continue; /* no output. */
 600
 601                 fputs(buffer, outputfp);
 602                 fflush(outputfp);
 603                 fprintf(outputfp, "\n");
 604         }
 605
 606         fprintf(outputfp, "\n");
 607
 608         return 0;
 609 }
 610